If you have a copy of the new issue, #5 "Life", you'll have found a BBC BASIC listing on page 25 for a version of Conway's Game of Life. Here's the code again if you want to paste it into an emulator, plus a demo of the final thing in action!

Line 20 sets the size of each square — it’s 200 pixels by default, so the display is very chunky. You can make that smaller if you like, but obviously it’ll then run even more slowly because there will be more cells on the screen."